Instruction manual

15
4.5. Temperature Calibration
The built-in temperature sensor included in the
probe is factory calibrated. Calibrate your sensor
only if you suspect temperature errors that may
have occurred over a long period of time or if you
have a replacement probe.
1. Turn the meter on. Press MODE to select pH
Measurement mode.
2. Press the CAL/MEAS key to enter pH
calibration mode. The CAL indicator will
appear above the primary display.
See Figure 17.
3. While in pH calibration mode, press the MODE
key to enter temperature calibration mode.
The primary display shows the temperature
reading with zero offset and the secondary
display shows you what the temperature value
was initially.
See Figure 18.
4. Compare the primary display reading to a
NIST-traceable thermometer or another
thermometer known to be accurate.
5. Press the V or W key to adjust the primary
display reading to agree with your temperature
standard.
See Figure 19.
Figure 17 - Enter pH Calibration mode
Figure 18 – Initial temperature value
Figure 19 - Adjust temperature value